Cooling effect test equipment based on stability of high-pressure turbine blade

Abstract

The utility model relates to the field of aero-engines, in particular to cooling effect test equipment based on the stability of high-pressure turbine blades. According to the technical scheme, the device comprises supporting legs, a base, an adjusting mechanism, a test air box, a wind direction simulation mechanism and a placement seat, the supporting legs are fixedly connected to the four corners of the lower portion of the base, sliding rails are symmetrically arranged in the base, the test air box is slidably connected to the sliding rails, and the adjusting mechanism in threaded transmission is installed between the test air box and the base; a gear-driven wind direction simulation mechanism is mounted on the upper side in the test air box; the device controls and drives a second driving motor to work, so that a first transmission wheel rotates, the first transmission wheel is meshed with a second transmission wheel through a gear of a transmission rack, rotation of the second transmission wheel drives the transmission rack to slide along a guide rail, movement of the transmission rack pushes a wind direction plate to adjust the wind direction through a linkage rod, and the wind direction plate is connected with a driving rod. And the linkage rod is movably adjusted between the wind direction plates on the two sides so as to simulate different wind direction conditions.

Description

Technical Field

[0001] The utility model relates to the field of aviation engines, in particular to a cooling effect test device based on the stability of high-pressure turbine blades. Background Art

[0002] Thermal-mechanical coupling fatigue failure of aircraft engine turbine blades is a major failure mode during aircraft engine service, severely impacting the engine's lifespan. Thermal-mechanical coupling fatigue testing of aircraft engine turbine blades is of great significance and engineering value for assessing turbine blade design and establishing industry-wide turbine blade production standards.

[0003] Inaccurate wind direction simulation during transmission turbine blade testing will lead to unreliable test data, thus affecting the evaluation and improvement of turbine blade performance. It is difficult to simulate different wind direction conditions, which limits the comprehensive evaluation of the equipment's performance under various actual working conditions and affects the authenticity and reliability of the test. In view of this, we propose a cooling efficiency test equipment based on the stability of high-pressure turbine blades to solve the existing problems. Utility Model Content

[0004] The purpose of the utility model is to provide a cooling efficiency test device based on the stability of high-pressure turbine blades to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling efficiency test device based on the stability of high-pressure turbine blades, comprising support legs, a base, an adjustment mechanism, a test bellows, a wind direction simulation mechanism and a placement seat, wherein the four corners below the base are fixedly connected to support legs, and slide rails are symmetrically provided in the base, and a test bellows is slidably connected to the slide rails, a threaded adjustment mechanism is installed between the test bellows and the base, and a gear-driven wind direction simulation mechanism is installed on the upper side of the test bellows.

[0006] Preferably, the adjustment mechanism includes a fixed plate, a bidirectional screw, a guide rod, a mounting seat and a first drive motor. The fixed plate is symmetrically arranged inside the base, and the mounting seat is fixedly connected to the middle part of the base. The bidirectional screw and the guide rod are respectively arranged on the left and right sides of the mounting seat. The test bellows is located below the bidirectional screw and the guide rod.

[0007] Preferably, one side of the fixed plate is fixedly connected to a first drive motor, an output end of the first drive motor is fixedly connected to a bidirectional screw rod, a lower side of the test bellows is a threaded structure, and the threads between the test bellows and the bidirectional screw rod cooperate with each other.

[0008] Preferably, the wind direction simulation mechanism includes a second drive motor, a driving wheel, a first transmission wheel, a limit frame, a guide rail, a transmission rack, a second transmission wheel, a drive rod, a wind direction plate and a linkage rod. The second drive motor is fixedly connected to the upper side of the test wind box, the output end of the second drive motor is fixedly connected to the driving wheel, and the test wind boxes on both sides are movably connected with drive rods. The drive rod passes through the test wind box and is respectively provided with a first transmission wheel and a second transmission wheel, and the gears between the driving wheel and the first transmission wheel are engaged with each other.

[0009] Preferably, one side of the test bellows is fixedly connected to a guide rail, a transmission rack is slidably connected to the guide rail, the transmission rack and the second transmission wheel are meshed with each other, and the test bellows is fixedly connected to a limiting frame below the transmission rack.

[0010] Preferably, a wind deflector is fixedly connected to the driving rod, and a linkage rod is movably connected between the wind deflectors on both sides, and a heater is fixedly connected to one side of the wind deflector in the test wind box.

[0011] Preferably, a placement seat is fixedly connected to the test wind box, and a turbine blade is installed on the test wind box through the placement seat, and the turbine blade is connected to an external temperature detector.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The first drive motor drives the bidirectional lead screw to rotate. The thread structure of the bidirectional lead screw matches the thread at the bottom of the test bellows, allowing the test bellows to move horizontally on the slide rail under the guidance of the guide rod. The position of the test bellows can be precisely adjusted to achieve different test conditions, and the installation and removal of the turbine blades are convenient, thereby improving the flexibility and efficiency of the test.

[0014] 2. The second drive motor is fixed on the upper side of the test wind box. The second drive motor is driven by control to work, driving the driving wheel to rotate. The driving wheel is engaged with the first transmission wheel through the gear to rotate the first transmission wheel. The first transmission wheel is engaged with the second transmission wheel through the gear of the transmission rack. The rotation of the second transmission wheel drives the transmission rack to slide along the guide rail. The movement of the transmission rack pushes the wind direction plate to adjust the wind direction through the linkage rod. The wind direction plates are connected by the drive rod and are movable and adjusted between the wind direction plates on both sides through the linkage rod to simulate different wind direction conditions. Inside the test wind box, a heater is fixed on one side of the wind direction plate to heat the airflow to simulate the wind temperature changes in the actual working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural diagram of the adjustment mechanism in the utility model;

[0017] Figure 3 It is a front view of the entire utility model;

[0018] Figure 4 It is a side view of the test bellows in the present utility model;

[0019] Figure 5 for Figure 4 Schematic diagram of the cross section along the AA direction.

[0020] In the figure: 1. Support leg; 2. Base; 3. Adjustment mechanism; 301. Fixing plate; 302. Bidirectional screw; 303. Guide rod; 304. Mounting seat; 305. First drive motor; 4. Test bellows; 5. Wind direction simulation mechanism; 501. Second drive motor; 502. Driving wheel; 503. First transmission wheel; 504. Limiting frame; 505. Guide rail; 506. Transmission rack; 507. Second transmission wheel; 508. Driving rod; 509. Wind deflector; 510. Linkage rod; 6. Placement seat; 7. Turbine blade; 8. Temperature detector; 9. Heater; 10. Slide rail. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0022] like Figure 1-5 As shown, the utility model proposes a cooling efficiency test equipment based on the stability of high-pressure turbine blades, including support legs 1, a base 2, an adjustment mechanism 3, a test bellows 4, a wind direction simulation mechanism 5 and a placement seat 6. The four corners below the base 2 are fixedly connected to the support legs 1, and slide rails 10 are symmetrically opened in the base 2. The test bellows 4 is slidably connected to the slide rails 10. A threaded adjustment mechanism 3 is installed between the test bellows 4 and the base 2, and a gear-driven wind direction simulation mechanism 5 is installed on the upper side of the test bellows 4.

[0023] In an optional embodiment, the adjustment mechanism 3 includes a fixed plate 301, a bidirectional screw 302, a guide rod 303, a mounting seat 304 and a first drive motor 305. The fixed plate 301 is symmetrically arranged in the base 2, and the mounting seat 304 is fixedly connected to the middle part of the base 2. The bidirectional screw and the guide rod 303 are respectively arranged on the left and right sides of the mounting seat 304. The test bellows 4 is located below the bidirectional screw and the guide rod 303.

[0024] In an optional embodiment, the fixing plate 301 is fixedly connected to a first drive motor 305 on one side, and a bidirectional screw 302 is fixedly connected to an output end of the first drive motor 305. The lower side of the test bellows 4 is a threaded structure, and the threads between the test bellows 4 and the bidirectional screw cooperate with each other.

[0025] The first drive motor 305 drives the bidirectional screw 302 to rotate. The threaded structure of the bidirectional screw 302 cooperates with the thread at the bottom of the test bellows 4, so that the test bellows 4 can move horizontally on the slide rail 10 under the guidance of the guide rod 303. The position of the test bellows 4 can be accurately adjusted to achieve different test conditions, and the installation and disassembly of the turbine blades 7 are convenient, thereby improving the flexibility and efficiency of the test.

[0026] In an optional embodiment, the wind direction simulation mechanism 5 includes a second drive motor 501, a driving wheel 502, a first transmission wheel 503, a limit frame 504, a guide rail 505, a transmission rack 506, a second transmission wheel 507, a drive rod 508, a wind direction plate 509 and a linkage rod 510. The upper side of the test wind box 4 is fixedly connected to the second drive motor 501, the output end of the second drive motor 501 is fixedly connected to the driving wheel 502, and the test wind boxes 4 on both sides are movably connected with the drive rod 508. The drive rod 508 passes through the test wind box 4 and is respectively provided with a first transmission wheel 503 and a second transmission wheel 507. The gears between the driving wheel 502 and the first transmission wheel 503 are engaged with each other.

[0027] In an optional embodiment, a guide rail 505 is fixedly connected to one side of the test bellows 4, a transmission rack 506 is slidably connected to the guide rail 505, the gears between the transmission rack 506 and the second transmission wheel 507 are engaged with each other, and the test bellows 4 is fixedly connected to a limiting frame 504 below the transmission rack 506.

[0028] In an optional embodiment, a wind deflector 509 is fixedly connected to the driving rod 508, and a linkage rod 510 is movably connected between the wind deflectors 509 on both sides, and a heater 9 is fixedly connected to one side of the wind deflector 509 in the test wind box 4;

[0029] The second drive motor 501 is fixed on the upper side of the test wind box 4. The second drive motor 501 is controlled to work and drive the driving wheel 502 to rotate. The driving wheel 502 is engaged with the first transmission wheel 503 through the gear, so that the first transmission wheel 503 rotates. The first transmission wheel 503 is engaged with the second transmission wheel 507 through the gear of the transmission rack 506. The rotation of the second transmission wheel 507 drives the transmission rack 506 to slide along the guide rail 505. The movement of the transmission rack 506 drives the wind direction plate 509 to adjust the wind direction through the linkage rod 510. The wind direction plate 509 is connected by the driving rod 508 and is movable and adjusted between the wind direction plates on both sides through the linkage rod 510 to simulate different wind direction conditions. Inside the test wind box 4, a heater 9 is fixed on one side of the wind direction plate 509 to heat the airflow to simulate the wind temperature changes in the actual working environment.

[0030] In an optional embodiment, a placement seat 6 is fixedly connected to the test wind box 4 , and a turbine blade 7 is installed on the test wind box 4 through the placement seat 6 . The turbine blade 7 is connected to an external temperature detector 8 .

[0031] The working principle of the present invention is as follows: when using the device, the first drive motor 305 drives the bidirectional screw rod 302 to rotate, and the thread structure of the bidirectional screw rod 302 cooperates with the thread at the bottom of the test bellows 4, so that the test bellows 4 can move horizontally on the slide rail 10 under the guidance of the guide rod 303, and the position of the test bellows 4 can be accurately adjusted to achieve different test conditions, and the installation and removal of the turbine blades 7 are convenient, thereby improving the flexibility and efficiency of the test. The second drive motor 501 is fixed on the upper side of the test bellows 4, and the second drive motor 501 is driven to work by control, driving the driving wheel 502 to rotate, and the driving wheel 502 is connected to the first drive motor 501 through the gear. The transmission wheel 503 is engaged, causing the first transmission wheel 503 to rotate. The first transmission wheel 503 is engaged with the second transmission wheel 507 through the gear of the transmission rack 506. The rotation of the second transmission wheel 507 drives the transmission rack 506 to slide along the guide rail 505. The movement of the transmission rack 506 pushes the wind deflector 509 to adjust the wind direction through the linkage rod 510. The wind deflector 509 is connected by the driving rod 508 and is movable and adjusted between the wind deflectors on both sides through the linkage rod 510 to simulate different wind direction conditions. Inside the test wind box 4, a heater 9 is fixed on one side of the wind deflector 509 to heat the airflow to simulate the wind temperature changes in the actual working environment.

[0032] It should be understood that the above-described specific embodiments of the present invention are intended to illustrate or explain the principles of the present invention and do not constitute limitations on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents of such scope and metes and bounds.

Claims

1. A cooling efficiency test device based on the stability of high-pressure turbine blades, characterized by: The invention comprises a support leg (1), a base (2), an adjustment mechanism (3), a test bellows (4), a wind direction simulation mechanism (5) and a placement seat (6), wherein the four corners below the base (2) are fixedly connected to the support leg (1), and a slide rail (10) is symmetrically provided in the base (2), and a test bellows (4) is slidably connected to the slide rail (10), a screw-driven adjustment mechanism (3) is installed between the test bellows (4) and the base (2), and a gear-driven wind direction simulation mechanism (5) is installed on the upper side of the test bellows (4).

2. The cooling efficiency test equipment based on the stability of high-pressure turbine blades according to claim 1, characterized in that: The adjustment mechanism (3) comprises a fixed plate (301), a bidirectional screw rod (302), a guide rod (303), a mounting seat (304) and a first drive motor (305); the fixed plate (301) is symmetrically arranged in the base (2); the mounting seat (304) is fixedly connected to the middle part of the base (2); the bidirectional screw rod and the guide rod (303) are respectively arranged on the left and right sides of the mounting seat (304); and the lower part of the test bellows (4) is located on the bidirectional screw rod and the guide rod (303).

3. The cooling efficiency test equipment based on the stability of high-pressure turbine blades according to claim 2, characterized in that: One side of the fixing plate (301) is fixedly connected to a first drive motor (305), and an output end of the first drive motor (305) is fixedly connected to a bidirectional screw rod (302). One side below the test bellows (4) is in a threaded structure, and the threads of the test bellows (4) and the bidirectional screw rod (302) cooperate with each other.

4. The cooling efficiency test equipment based on the stability of high-pressure turbine blades according to claim 1, characterized in that: The wind direction simulation mechanism (5) comprises a second driving motor (501), a driving wheel (502), a first transmission wheel (503), a limiting frame (504), a guide rail (505), a transmission rack (506), a second transmission wheel (507), a driving rod (508), a wind direction plate (509) and a linkage rod (510). The upper side of the test wind box (4) is fixedly connected to the second driving motor (501), the output end of the second driving motor (501) is fixedly connected to the driving wheel (502), and the driving rod (508) is movably connected in the test wind boxes (4) on both sides. The driving rod (508) passes through the test wind box (4) and is respectively provided with a first transmission wheel (503) and a second transmission wheel (507). The gears between the driving wheel (502) and the first transmission wheel (503) are meshed with each other.

5. The cooling efficiency test equipment based on the stability of high-pressure turbine blades according to claim 4, characterized in that: A guide rail (505) is fixedly connected to one side of the test bellows (4), a transmission rack (506) is slidably connected to the guide rail (505), the transmission rack (506) and the second transmission wheel (507) are meshed with each other, and the test bellows (4) is fixedly connected to a limiting frame (504) below the transmission rack (506).

6. The cooling efficiency test equipment based on the stability of high-pressure turbine blades according to claim 5, characterized in that: The driving rod (508) is fixedly connected to a wind deflector (509), and a linkage rod (510) is movably connected between the wind deflectors (509) on both sides, and a heater (9) is fixedly connected to one side of the wind deflector (509) in the test wind box (4).

7. The cooling efficiency test equipment based on the stability of high-pressure turbine blades according to claim 1, characterized in that: A placement seat (6) is fixedly connected inside the test wind box (4), and a turbine blade (7) is installed on the test wind box (4) via the placement seat (6), and the turbine blade (7) is connected to an external temperature detector (8).

Images